| 9806.00.05 | | Upon the request of the Department of State, ambassadors, ministers, charge d'affaires, secretaries, counselors, attaches and other representatives, officers and employees of foreign governments, accredited to the United States or en route to or from other countries to which accredited, and their immediate families, suites and servants | | Free | | Free |
| 9806.00.40 | | Upon the request of the Department of State, ambassadors, ministers, charge d'affaires, secretaries, counselors and attaches of foreign embassies and legations | | Free | | Free |
| 9808.00.50 | 00 | Materials certified by it to the Commissioner of Customs to be source materials the entry of which is necessary in the interest of the common defense and security | | Free | | Free |
| 9813.00.40 | | Locomotives and other railroad equipment brought temporarily into the United States for use in clearing obstructions, fighting fires or making emergency repairs on railroads within the United States, or for use in transportation otherwise than in international traffic when the Secretary of the Treasury finds that the temporary use of foreign railroad equipment is necessary to meet an emergency | | Free, under bond, as prescribed in U.S. note 1 to this subchapter | Free (AU,BH,CA, CL,IL,JO,MA, MX,P,SG) | Free, under bond, as prescribed in U.S. note 1 to this subchapter |
| 9818.00.05 | 00 | Spare parts necessarily installed before first entry into the United States, upon first entry into the United States of each such spare part purchased in, or imported from, a foreign country | | The rate applicable in the absence of this subheading on the cost of such parts | Free (BH,C,CA,E, IL,J,JO,MA, MX,P) The rate applicable in the absence of this subheading on the cost of such parts (AU,CL,SG) | 50 percent of the cost of such parts |
